Fault tolerance strategy of general nonlinear systems with actuator and sensor fault based on T‐S fuzzy model

Abstract In this paper, a fault estimation (FE) and sliding mode fault tolerance strategy (SMFTS) scheme based on T‐S fuzzy model are proposed for a class of general nonlinear systems (GNS) that encounter actuator and sensor faults and disturbance. A coordinate transformation is introduced to convert sensor fault into actuator fault. Then, a fuzzy perturbation estimator is established to estimate the detailed fault and disturbance information. Then, a SMFTS scheme is proposed to minimize the damage caused by the faults. Finally, the simulation results show that the designed algorithm can correctly estimate the fault and ensure the system performance after the fault.